diff --git a/pyramid_debugtoolbar/templates/console.dbtmako b/pyramid_debugtoolbar/templates/console.dbtmako
index f5941ad6..46f8c68f 100644
--- a/pyramid_debugtoolbar/templates/console.dbtmako
+++ b/pyramid_debugtoolbar/templates/console.dbtmako
@@ -6,7 +6,7 @@
     <link rel="stylesheet" href="${static_path}css/debugger.css" 
           type="text/css">
     <script type="text/javascript">
-      var TRACEBACK = ${traceback_id},
+      var TRACEBACK = ${str(traceback_id)},
           CONSOLE_MODE = ${console},
           DEBUGGER_TOKEN = "${token}",
           EVALEX = ${evalex};
diff --git a/pyramid_debugtoolbar/templates/exception.dbtmako b/pyramid_debugtoolbar/templates/exception.dbtmako
index 0e31253a..bd3acdca 100644
--- a/pyramid_debugtoolbar/templates/exception.dbtmako
+++ b/pyramid_debugtoolbar/templates/exception.dbtmako
@@ -7,7 +7,7 @@
     <link rel="stylesheet" href="${static_path}css/debugger.css" 
           type="text/css">
     <script type="text/javascript">
-      var TRACEBACK = ${traceback_id},
+      var TRACEBACK = ${str(traceback_id)},
           DEBUGGER_TOKEN = "${token}",
           CONSOLE_MODE = ${console},
           EVALEX = ${evalex},
diff --git a/pyramid_debugtoolbar/templates/redirect.dbtmako b/pyramid_debugtoolbar/templates/redirect.dbtmako
index 21d73938..b3ec4fab 100644
--- a/pyramid_debugtoolbar/templates/redirect.dbtmako
+++ b/pyramid_debugtoolbar/templates/redirect.dbtmako
@@ -3,7 +3,7 @@
         <title>Redirect intercepted</title>
     </head>
     <body>
-        <h1>Redirect (${redirect_code})</h1>
+        <h1>Redirect (${str(redirect_code)})</h1>
         <p>Location: <a href="${redirect_to}">${redirect_to}</a></p>
         <p class="notice">
 
